Usually by the second or third question they got as much out of Google Assistant as they are going to get (because they just keep asking variations of the same thing, but don’t quite grasp that it is really the same question, or they have now gotten to a hyper specific question). By question 5 or 6 they typically are done with Google and come to us to discuss further.
To be fair AI models are being replaced multiple times a year these days… So yeah, in 2 years it should be killed, because improved models should exist.